当点击图像时，机器人会模仿随机的人类行为吗？

Question

Please tell me, could such a Captcha alternative work?

Basically if I use something like this:

<?php
$foo_x=$_POST['foo_x'];
$foo_y=$_POST['foo_y']
?>

<form action="http://foo.com/function/" method="post">
<input type="image" alt="image" src="img.jpg" name="foo"/>
</form>

And so a real user would click at a random X,Y coordinates, which I can then pass to "function" which in turn will send the user to the content, unless it's a bot.

The question is whether a bot that would go to the link specified in action=, would do so via the image - "clicking" on it, and if so then would the bot get a random coordinate or just "click" the exact center or the 0,0 coordinate? Or would it just go to the link directly without triggering $_POST at all? Could a bot be programmed to "click" a random spot on such an image?

Do you know of a better way of achieving such anti-bot image functionality?

Thank you!

Answer 1

I hate Captchas, you could write easily a function that can somehow guess if it is a human or a bot ie

1. Time difference between page load and form submission , user will take longer to submit
2. Track if mouse is moving for the first ie X seconds , or if TAB key is pressed for users that don't use mouse.
3. Have a CSS hidden input field , and if it is populated and #1 or #2 returns ALARM than it is a bot Combining 3 of those will get out 99% of bots.